Question

The drawing shows an end-view of
two wires. They are long, straight, and perpendicular to the plane
of the paper. Their cross sections lie at the corners of a 0.8-m
square. The current in wire 1 is going into the page and it is
equal to 12 A and the current in wire 2 is going out of the page
and it iis equal to 10 A respectively. What is the magnitude of the
magnitic filed at one of the emty corner?